More details are being revealed about Sunday’s deadly stabbing in Maili.

Police say 39-year-old Derrick Hernandez stabbed 42-year-old Frankie Feliciano Jr. to death during an argument at Maili Beach Park on Sunday. According to court documents, witnesses told police that Hernandez became angry because Feliciano was sitting on his beach mat and struck him in the head. Witnesses later noticed Hernandez was holding a knife.

The medical examiner confirmed Thursday that Feliciano died of a stab wound to the head.

Hernandez is charged with second-degree murder. He remains behind bars with bail set at $1 million.